Today's Final Report Card..
Was the green light still flashing after 18:26? After (repeated) total discharge the battery can get messed up, might recover/might not (I'm sure you're aware) - too much lead sulfate on plates. Really bad that Nissan can't just swap out the battery to determine if this is the issue. They should be able to swap out one from a demo vehicle if they really don't have the parts.Today's Final Report Card..
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This is within the normal range for bulk and absorption phases when charging a 12V lead-acid battery.The battery voltage rose up to 14.5 volts. Oh oh, this is more than a lead-acid normally accepts.
A fully charged healthy 12 volt battery with no load will typically measure somewhere between 12.6 -12.7 volts. So 13 volts is nothing to be concerned about. On the flip side if your battery was allowed to drain down to 11.9 volts as you described, it would not be is surprising to witness 14.5 volts or higher as it recharges since that voltage is within the normal charging rate. .We had a connector around the battery that was connected to nothing. Found out that it was the current sensor connector. It goes besides the "-" battery terminal. Huh... I connected it back in. The dealer service team probably messed in this section. I measured the battery voltage, it was about at 11.9 volts. Bad feeling. Has the long trip from Japan depleted the battery and reduced its capacity under specs. I'll need to check that later on. I found that when the hood is open, there is no charging of the 12v battery. Has the hood stayed open for days in the dealer's garage? This was their first Ariya. Maybe for the sake of safety. If the car is turned on, then it should charge. I do not know how much current is drained from this battery when the car is off, but with a low trickle load, being under 12 volts is bad news. At twelve the battery has only about 10% of energy left in.
I turned the car "on", to its "ready" state. The charger kicked in. The battery voltage rose up to 14.5 volts. Oh oh, this is more than a lead-acid normally accepts. Is the battery dead open? After a while it went back to about 13.0 volts. This value is safe, but during a charge cycle this is a low value. A good trickle-charge current could bring the battery in the safe 13.8 volt ballpark. So far I did not find any information about the charge algorithm, that does not help at all to diagnose what's happening. I will keep the car in the "ready" state for a couple of hours. So far it seems to have stopped at around 13.0V. This is too low.
The battery is a group 140R.
Agreed -- our 2019 Leaf had one that was bad after like two years. Bad 12v will cause all kinds of problems. I think this one is more like a case of infant mortality, bad right off the line.Maybe I missed it, but have you tried just replacing the 12V battery?
Sheesh. That must be so frustrating and disappointing. It's almost like it gets your hopes up, then crushes them!
LOL!!!Sheesh. That must be so frustrating and disappointing. It's almost like it gets your hopes up, then crushes them!
Yes.. by constantly monitoring.. I have no choice.how did you get those stats?
Nope he refuses to even though it’s covered under warranty because he’s waiting for his precious Made in Mexico chevy ev. All of these posts are pointless bitchingHave you replaced the battery?
In fairness, the OP did title the post "only read if you have 12v battery issues"... I had an issue with the 12v on a Leaf, so I get to read! I know very little about the 12v so I find this thread educational. 😄. I want to get one of those cool app-based monitors, too!Nope he refuses to even though it’s covered under warranty because he’s waiting for his precious Made in Mexico chevy ev. All of these posts are pointless bitching
What’s the benefit of that? It’s covered under warranty and if it is not, it’s an inexpensive thing to replaceBlack-Premiere was asking if anyone had similar readings, in order to compare. Apparently nobody else has done measurements. Since Nissan has not published data on what to expect in voltage readings, nor do they let us see the 12V battery voltage at the driver display in real-time (correct me if I am wrong), the readings obtained by BlackPremiere may look worrisome. But maybe not. The chart that he included in his comment #15 contains much information. I've seen things that seem in a similar ballpark, in my Evolve+. It would be great to know about more Ariya's batteries. Is this a normal pattern?
Meanwhile I disconnected mine, and am doing tests the analogic way since I can measure its performance without interference from the rest of the car.